CN111541498B - Signal quality indication method based on channel state information - Google Patents

Signal quality indication method based on channel state information Download PDF

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CN111541498B
CN111541498B CN202010215677.2A CN202010215677A CN111541498B CN 111541498 B CN111541498 B CN 111541498B CN 202010215677 A CN202010215677 A CN 202010215677A CN 111541498 B CN111541498 B CN 111541498B
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signal quality
receiving
channel state
antenna
transmitting
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CN111541498A (en
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陈永佑
石卫
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Chengdu Lianzhou International Technology Co ltd
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Chengdu Lianzhou International Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract

The invention discloses a signal quality indication method based on channel state information, which comprises the following steps: acquiring channel state information generated by a receiving side according to a data packet transmitted by a transmitting side; according to the channel state information, obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at a receiving side; calculating the average value of the signal amplitudes of all receiving paths of each receiving antenna at the receiving side to obtain the received signal amplitude of each receiving antenna at the receiving side; determining the quality grade of a received signal corresponding to each receiving antenna at the receiving side according to the amplitude of the received signal of each receiving antenna at the receiving side; and sending the received signal quality grade corresponding to each receiving antenna to a user interface of the user terminal so that the user terminal indicates the received signal quality grade corresponding to each receiving antenna. The invention can indicate the signal quality grade of each antenna, and is convenient for the user to optimize the communication performance of the wireless equipment.

Description

Signal quality indication method based on channel state information
Technical Field
The invention relates to the technical field of wireless communication, in particular to a signal quality indication method based on channel state information.
Background
With the development of wireless communication technology, wireless devices are applied more and more widely. In using wireless devices, users often need to know the signal quality between the wireless devices to optimize the communication performance between the wireless devices, for example, users adjust the spatial location of the wireless devices according to the signal quality to obtain better transmission efficiency at a specific location.
Currently, when different wireless devices are connected to each other and transmit data, the RSSI value is usually detected to reflect the signal quality, and a user determines whether the position of the wireless device needs to be adjusted according to the RSSI value.
However, the signal quality of the wireless device is affected not only by the spatial position of the wireless device as a whole, but also by the antenna placement position of the wireless device. Even if the overall spatial position of the wireless device is unchanged, different signal qualities can be obtained by adjusting the placement direction of the antenna of the wireless device, and different communication performances can be obtained. In the technical scheme of the prior art, the signal quality is reflected through the RSSI value, and only the signal quality obtained by the wireless equipment as a whole can be reflected, but the signal quality obtained by different antennas cannot be obtained. When the antenna needs to be adjusted, the user needs to continuously adjust trial and error to know which antenna has poor signal quality, and cannot directly adjust the antenna in a targeted manner, so that the user is inconvenient to optimize the communication performance of the wireless device.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide a method for indicating signal quality based on channel state information, which can indicate the signal quality level of each antenna, and is convenient for a user to optimize the communication performance of a wireless device.
In order to solve the above technical problem, in a first aspect, the present invention provides a signal quality indication method based on channel state information, where the method includes:
acquiring channel state information generated by a receiving side according to a data packet transmitted by a transmitting side;
obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information;
calculating the average value of the signal amplitudes of all receiving paths of each receiving antenna at the receiving side to obtain the received signal amplitude of each receiving antenna at the receiving side;
determining a received signal quality grade corresponding to each receiving antenna of the receiving side from R preset received signal quality grades according to the received signal amplitude of each receiving antenna of the receiving side; wherein, R receiving signal quality grades are respectively corresponding to R preset receiving signal amplitude ranges one by one, and R is more than 1;
and sending the received signal quality grade corresponding to each receiving antenna to a user interface of a user terminal, so that the user terminal indicates the received signal quality grade corresponding to each receiving antenna after receiving the received signal quality grade corresponding to each receiving antenna through the user interface.
Further, the channel state information includes signal state data of each of M × N data streams on K subcarriers, where each of the signal state data includes a signal amplitude and a signal phase, M is the number of transmit antennas on the transmit side, and N is the number of receive antennas on the receive side; m >1, N >1, K > 1;
then, the signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side is obtained according to the channel state information;
constructing a first channel state matrix according to M x N x K channel state data in the channel state information;
performing dimension reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side.
Further, after calculating an average value of signal amplitudes of all receiving paths of each receiving antenna on the receiving side and obtaining a received signal amplitude of each receiving antenna on the receiving side, the method further includes:
calculating the average value of the received signal amplitudes of all the receiving antennas at the receiving side to obtain the total received signal amplitude at the receiving side;
determining a received signal quality grade corresponding to the total received signal amplitude from the R preset received signal quality grades to obtain a total received signal quality grade;
and controlling the total received signal quality grade to indicate to a user according to a preset indication form.
Further, the housing of the receiving side or the transmitting side is provided with X first indicator lights for indicating the signal quality of the received signal, wherein X > 1; then, the controlling the total received signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a first indicator lamp to be lightened from X first indicator lamps according to the total received signal quality grade;
and controlling the first to-be-lightened indicator lamp lightened by the receiving side or the transmitting side so as to enable the total received signal quality grade to be indicated to a user through the first indicator lamp.
In the signal quality indicating method based on the channel state information provided by the first aspect of the present invention, by acquiring the channel state information, further acquiring the received signal amplitude of each receiving antenna at the receiving side, and determining and indicating the received signal level of each receiving antenna to the user, the user can know the signal quality of each receiving antenna, thereby being convenient for adjusting the placing position and the like of the receiving antenna in a targeted manner, and being convenient for the user to optimize the communication performance of the wireless device. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each receiving antenna to the user, and the user can directly know the signal quality of each receiving antenna through the received signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the receiving antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
In order to solve the above technical problem, in a second aspect, the present invention provides a signal quality indication method based on channel state information, including:
acquiring channel state information generated by a receiving side according to a data packet transmitted by a transmitting side;
obtaining a signal amplitude corresponding to each transmitting path of each transmitting antenna at the transmitting side according to the channel state information;
calculating the average value of the signal amplitude of all the transmitting paths of each transmitting antenna on the transmitting side to obtain the transmitting signal amplitude of each transmitting antenna on the transmitting side;
determining a transmission signal quality grade corresponding to each transmission antenna on the transmitting side from T preset transmission signal quality grades according to the transmission signal amplitude of each transmission antenna on the transmitting side; the T emission signal quality grades are respectively in one-to-one correspondence with T preset emission signal amplitude ranges, and T is greater than 1;
and sending the quality grade of the transmission signal corresponding to each transmitting antenna to a user interface of a user terminal, so that the user terminal indicates the quality grade of the transmission signal corresponding to each transmitting antenna after receiving the quality grade of the transmission signal corresponding to each transmitting antenna through the user interface.
Further, the channel state information includes signal state data of each of M × N data streams on K subcarriers, where each of the signal state data includes a signal amplitude and a signal phase, M is the number of transmit antennas on the transmit side, and N is the number of receive antennas on the receive side; m >1, N >1, K > 1;
then, obtaining a signal amplitude corresponding to each transmission path of each transmission antenna at the transmitting side according to the channel state information;
constructing a first channel state matrix according to M x N x K channel state data in the channel state information;
performing dimensionality reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each transmitting path of each transmitting antenna on the transmitting side.
Further, after calculating an average value of signal amplitudes of all transmission paths of each transmission antenna on the transmission side and obtaining a transmission signal amplitude of each transmission antenna on the transmission side, the method further includes:
calculating the average value of the transmitting signal amplitudes of all the transmitting antennas at the transmitting side to obtain the total transmitting signal amplitude of the transmitting side;
determining a transmission signal quality grade corresponding to the total transmission signal amplitude from the T preset transmission signal quality grades to obtain a total transmission signal quality grade;
and controlling the total transmission signal quality level to indicate to a user according to a preset indication form.
Further, the shell of the receiving side or the transmitting side is provided with Y second indicator lights for indicating the signal quality of the transmitted signal, wherein Y is more than 1; then, the controlling the total transmitted signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a second indicator lamp to be lightened from the Y second indicator lamps according to the total transmitted signal quality grade;
and controlling the second indicator lamp to be lightened which is lightened on the receiving side or the transmitting side so that the total transmitted signal quality level is indicated to a user through the second indicator lamp.
According to the signal quality indicating method based on the channel state information, the channel state information is obtained, the amplitude of the transmitting signal of each transmitting antenna at the transmitting side is further obtained, the transmitting signal level of each transmitting antenna is determined and indicated to a user, the signal quality of each transmitting antenna can be obtained by the user, the placing direction and the like of the transmitting antennas can be adjusted in a targeted mode, and the user can optimize the communication performance of the wireless device conveniently. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each transmitting antenna to the user, and the user can directly know the signal quality of each transmitting antenna through the transmitting signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the transmitting antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
In order to solve the above technical problem, in a third aspect, the present invention provides a signal quality indication method based on channel state information, where the method includes:
according to any one of the methods for indicating signal quality based on channel state information provided by the first aspect, a received signal quality level corresponding to each receiving antenna at the receiving side is indicated;
according to any one of the signal quality indicating methods based on channel state information provided by the second aspect, the transmission signal quality level corresponding to each transmitting antenna at the transmitting side is indicated.
Further, the data packet is generated by the transmitting side in an OFDM modulation mode.
In the signal quality indicating method based on the channel state information provided by the third aspect of the present invention, the received signal amplitude of each receiving antenna at the receiving side and the transmitted signal amplitude of each transmitting antenna at the transmitting side are further obtained by obtaining the channel state information, and the received signal quality level of each receiving antenna at the receiving side and the transmitted signal level of each transmitting antenna at the transmitting side are determined and indicated to the user. The embodiment enables a user to know the signal quality of each receiving antenna at the receiving side and the signal quality of each transmitting antenna at the transmitting side, thereby being convenient for adjusting the placing directions and the like of the receiving antennas and the transmitting antennas in a targeted manner and being convenient for the user to optimize the communication performance of the wireless equipment. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each receiving antenna and the signal amplitude of each transmitting antenna to the user, and the user can directly know the signal quality of each receiving antenna and each transmitting antenna through the receiving signal quality grade and the transmitting signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the receiving antenna and the transmitting antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
Drawings
Fig. 1 is a flowchart illustrating a method for indicating signal quality based on channel state information according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a signal quality indication method based on channel state information according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a signal quality indication method based on channel state information according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, assuming that the wireless device a and the wireless device B can mutually transmit data packets, for a data packet transmitted from the wireless device a to the wireless device B, the receiving side is the wireless device B, and the transmitting side is the wireless device a; and for a packet transmitted from wireless device B to wireless device a, the receiving side is wireless device a and the transmitting side is wireless device B. Therefore, the receiving side involved in the method for indicating signal quality based on channel state information provided by the present invention may be wireless device a or wireless device B, and accordingly the transmitting side may be wireless device B or wireless device a. That is, in the method for indicating signal quality based on channel state information according to the first embodiment and the second embodiment of the present invention, the receiving side and the transmitting side may be the same wireless device, and if it is desired to obtain the signal quality of the receiving antenna and the transmitting antenna of the same wireless device, the wireless device only needs to be used as the receiving side and the transmitting side, respectively, for example, the wireless device a and the wireless device B mutually transmit packets.
It should be noted that, for a data packet transmitted to a receiving side, each transmitting antenna of the transmitting side has multiple transmitting paths to transmit the data packet, and each receiving antenna of the receiving side has multiple receiving paths to receive the data packet. For example, M transmit antennas on the transmit side, each transmit antenna may transmit to N receive antennas on the receive side. For the transmitting side, each transmit antenna has N transmit paths, for a total of M × N transmit paths, and the data packets are transmitted to the receiving side via M × N data streams. Accordingly, each of the N receive antennas on the receive side receives a data stream from the M transmit antennas on the transmit side, and for the receive side, each receive antenna has M receive paths for a total of M × N receive paths, and a data packet is received by the receive side through the M × N data streams.
In the following embodiment, the data packet sent by the wireless device a to the wireless device B (i.e. the wireless device a is a transmitting side, and the wireless device B is a receiving side) is taken as an example for illustration, but the invention is not limited to the embodiment of the present application:
example one
The present invention provides a method for indicating signal quality based on channel state information, please refer to fig. 1, where fig. 1 is a schematic flow chart of a method for indicating signal quality based on channel state information according to an embodiment of the present invention; specifically, the method comprises the following steps:
s11, acquiring channel state information generated by the receiving side according to the data packet transmitted by the transmitting side;
s12, obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information;
s13, calculating the average value of the signal amplitudes of all receiving paths of each receiving antenna at the receiving side, and obtaining the received signal amplitude of each receiving antenna at the receiving side;
s14, determining a received signal quality level corresponding to each receiving antenna of the receiving side from R preset received signal quality levels according to the received signal amplitude of each receiving antenna of the receiving side; wherein, R receiving signal quality grades are respectively corresponding to R preset receiving signal amplitude ranges one by one, and R is more than 1;
s15, sending the quality grade of the received signal corresponding to each receiving antenna to a user interface of the user terminal, so that the user terminal indicates the quality grade of the received signal corresponding to each receiving antenna after receiving the quality grade of the received signal corresponding to each receiving antenna through the user interface.
It should be noted that Channel State Information (CSI) is Information used to estimate Channel characteristics of each communication path, and is generally a complex number describing a signal amplitude and a signal phase of a signal corresponding to each subcarrier in a frequency domain space. Usually, the CSI information is generated at the receiving side of the packet, and the obtained CSI information contains channel state data (signal amplitude and signal phase) of each path from the antenna of the transmitting side to the antenna of the receiving side. If the data packet transmitted between the transmitting side and the receiving side is the data packet in the OFDM modulation mode, the CSI information can be obtained through the inherent physical layer of the OFDM bottom layer protocol.
It should be noted that, although the CSI information is generally generated at the receiving side, the CSI information generated at the receiving side may be transmitted to the transmitting side or other data processing devices, and therefore, the performing device of the signal quality indication method based on the channel state information provided by the present invention may be the receiving side, the transmitting side or other data processing devices as long as the solution of the present invention can be performed with corresponding data processing capability. For example, if the execution device is a receiving side, the receiving side may directly obtain CSI information generated by itself; if the execution device is a transmitting side or other data processing device, the transmitting side or other data processing device may obtain the CSI information through the CSI information transmitted by the receiving side.
In particular, it is assumed that wireless device a sends a data packet to wireless device B, and wireless device B generates CSI information according to the data packet transmitted by wireless device a. Obtaining CSI information generated by the wireless device B, and obtaining a signal amplitude corresponding to each receiving path of each receiving antenna of the wireless device B according to the CSI information, for example, a signal amplitude corresponding to M receiving paths of the 1 st receiving antenna of the wireless device B, a signal amplitude corresponding to M receiving paths of the 2 nd receiving antenna of the wireless device B, … …, and a signal amplitude corresponding to M receiving paths of the nth receiving antenna of the wireless device B. Calculating an average value of M signal amplitudes of M reception paths of the 1 st reception antenna of the wireless device B, calculating an average value of M signal amplitudes of M reception paths of the 2 nd reception antenna of the wireless device B, … … calculating an average value of M signal amplitudes of M reception paths of the nth reception antenna of the wireless device B, and thus obtaining a reception signal amplitude of the 1 st reception antenna of the wireless device B, a reception signal amplitude of the 2 nd reception antenna of the wireless device B, … …, and a reception signal amplitude of the nth reception antenna of the wireless device B in this order.
The R received signal quality levels are respectively in one-to-one correspondence with R preset received signal amplitude ranges, for example, R is 3, the preset 3 received signal quality levels are "low", "medium", and "high", the received signal amplitude range corresponding to the received signal quality level of "low" is 0 to 0.2, the received signal amplitude range corresponding to the received signal quality level of "medium" is 0.2 to 0.4, and the received signal amplitude range corresponding to the received signal quality level of "high" is 0.4 to 0.6. Of course, the number of R, the received signal quality level, and the received signal amplitude range corresponding to each received signal level may be set according to specific situations, and the above data are only exemplary.
For the 1 st receiving antenna of the wireless device B, determining a received signal quality level corresponding to the 1 st receiving antenna of the wireless device B from R preset received signal quality levels according to the received signal amplitude of the 1 st receiving antenna of the wireless device B; for example, assuming that the received signal amplitude of the 1 st receiving antenna of the wireless device B is 0.3, based on the above example, the received signal quality level corresponding to the 1 st receiving antenna of the wireless device B may be determined to be "medium". For the 2 nd receiving antenna of the wireless device B, determining a received signal quality level corresponding to the 2 nd receiving antenna of the wireless device B from R preset received signal quality levels according to the received signal amplitude of the 2 nd receiving antenna of the wireless device B; for example, assuming that the received signal amplitude of the 2 nd receiving antenna of the wireless device B is 0.5, based on the above example, it may be determined that the received signal quality level corresponding to the 1 st receiving antenna of the wireless device B is "high". And determining the quality grade of the received signal corresponding to each receiving antenna by analogy.
And sending the received signal quality grade corresponding to each receiving antenna to a user interface of a user terminal, for example, the user terminal is a mobile phone or a PC terminal, the user interface is a network interface, and the user terminal presents each received signal quality grade at the user terminal after receiving the received signal quality grade corresponding to each receiving antenna through the user interface, so as to indicate the received signal quality grade corresponding to each receiving antenna to a user. Optionally, the quality level of the received signal corresponding to each receiving antenna may be mapped into a table or an image, and the user obtains the quality level of the received signal corresponding to each receiving antenna through the table or the image. Optionally, corresponding software may be specially set to indicate the received signal quality level corresponding to each receiving antenna to the user, and the received signal quality level corresponding to each receiving antenna is sent to the network interface corresponding to the software; or after the received signal quality level is sent to a network interface of the user terminal in the form of a file, the file is opened in response to an opening instruction of the user so as to indicate the received signal quality level corresponding to each receiving antenna to the user.
It should be noted that, the implementation process is similar for the implementation in which the wireless device B serves as the transmitting side and the wireless device a serves as the receiving side, and is not described again here.
The signal quality indicating method based on the channel state information, provided by the invention, can enable a user to acquire the signal quality of each receiving antenna by acquiring the channel state information and further acquiring the amplitude of the received signal of each receiving antenna at the receiving side and determining and indicating the received signal grade of each receiving antenna to the user, thereby being convenient for adjusting the placing position and the like of the receiving antenna in a targeted manner and being convenient for the user to optimize the communication performance of the wireless equipment. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each receiving antenna to the user, and the user can directly know the signal quality of each receiving antenna through the received signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the receiving antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
Preferably, the channel state information includes signal state data of each of M × N data streams on K subcarriers, each of the signal state data includes a signal amplitude and a signal phase, M is the number of transmit antennas on the transmit side, and N is the number of receive antennas on the receive side; m >1, N >1, K > 1;
then, obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information;
constructing a first channel state matrix according to M x N x K channel state data in the channel state information;
performing dimensionality reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side.
Below isCSI with M N rows and K columns of the first channel state matrix1The matrix is illustrated as an example:
assuming channel state information as follows1Matrix:
Figure GDA0003515953800000121
wherein csii,jAnd the channel state data of the ith data stream on the jth subcarrier is represented, wherein i is 1,2, …, M is N, j is 1,2, …, and K is the number of subcarriers.
The above matrix CSI1Performing dimensionality reduction to obtain CSI with dimensions of M, N, K1Reducing the dimension of the matrix to obtain an M-N matrix so as to eliminate the channel correlation among K subcarriers and obtain a second channel state matrix with M rows and N columns, such as the following CSI2Matrix shows:
Figure GDA0003515953800000131
for CSI2Each channel state data csi of the matrixmnIs extracted to obtain a first channel state matrix, M is 1,2, …, M, N is 1,2, …, N.
For the second channel state matrix CSI2The signal amplitude of the channel state data is extracted to obtain the signal amplitude of each receiving path of each receiving antenna. If all the signal amplitudes are represented by a matrix, the following CSI matrix is obtained:
Figure GDA0003515953800000132
wherein, amnRepresenting CSI2Channel state data csi in matrixmnOf the signal amplitude of (1).
If the signal amplitudes of all receiving paths of the same receiving antenna at the receiving side are arranged in the same column, a in the CSImnCorresponding to the m-th receiving path of the n-th receiving antenna on the receiving sideThe amplitude of the signal. Then, when n is 1, a11～am1The signal amplitudes corresponding to m receiving paths of the 1 st receiving antenna on the receiving side respectively; when n is 2, a12～am2The signal amplitudes corresponding to the m receiving paths of the 2 nd receiving antenna on the receiving side are respectively, and so on.
Preferably, after calculating an average value of signal amplitudes of all receiving paths of each receiving antenna of the receiving side and obtaining a received signal amplitude of each receiving antenna of the receiving side, the method further includes:
calculating the average value of the received signal amplitudes of all the receiving antennas at the receiving side to obtain the total received signal amplitude at the receiving side;
determining a received signal quality grade corresponding to the total received signal amplitude from the R preset received signal quality grades to obtain a total received signal quality grade;
and controlling the total received signal quality grade to indicate to a user according to a preset indication form.
In specific implementation, assume that there are N receiving antennas on the receiving side, and the received signal amplitudes obtained from the 1 st receiving antenna to the nth receiving antenna are R1～RNThen, R is also calculated1～RNAnd averaging to obtain the total received signal amplitude RX. And determining the received signal quality grade corresponding to the total received signal amplitude RX from the R preset received signal quality grades to obtain the total received signal quality grade. For example, if RX is 0.46, and the received signal quality level corresponding to RX 0.46 is determined to be "medium", the total received signal quality level is obtained as "medium".
And after the total received signal quality grade is obtained, controlling the total received signal quality grade to indicate to a user according to a preset indication form. It should be noted that, the indication form has multiple choices, for example, the indication form is the same as the received signal quality level of each receiving antenna, and is sent to the network interface of the user terminal, the user terminal indicates the total received signal quality level to the user, and the user terminal can indicate the total received signal quality level and the received signal quality level of each receiving antenna to the user through the forms of voice, statistical chart, table, etc.; for another example, the total received signal quality level is sent to the receiving side or the transmitting side, the total received signal quality level is indicated to the user through corresponding software hardware of the receiving side or the transmitting side, the receiving side or the transmitting side can indicate the total received signal quality level to the user through voice, indicator lights and other forms, and only corresponding control instructions need to be sent to the receiving side or the transmitting side.
In this embodiment, the user can not only know the signal quality of each receiving antenna, but also know the signal quality of the overall receiving signal of the receiving side, which is not only convenient for purposefully adjusting the placing position of the receiving antenna, etc., but also convenient for the user to adjust the overall position of the wireless device, and further convenient for the user to optimize the communication performance of the wireless device.
Preferably, the housing of the receiving side or the transmitting side is provided with X first indicator lights for indicating the signal quality of the received signal, X > 1; then, the controlling the total received signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a first indicator lamp to be lightened from X first indicator lamps according to the total received signal quality grade;
and controlling the first indicator lamp to be lightened which is lightened on the receiving side or the transmitting side so as to enable the total received signal quality grade to be indicated to a user through the first indicator lamp.
In this embodiment, the total received signal quality level is indicated to the user in the form of an indicator lamp on the receiving side or the transmitting side, so that the user can know the total received signal quality level more intuitively.
Optionally, the first indicator to be lit is determined by a quantity logic, that is, the total received signal quality level is represented by the quantity of the lit first indicator. For example, assuming that the housing on the receiving side or the transmitting side is provided with 3 first indicator lamps, when the total received signal quality level is "low", 1 of the first indicator lamps is determined to be the first indicator lamp to be turned on, and the receiving side or the transmitting side is controlled to turn on 1 of the first indicator lamps to be turned on; when the total received signal quality grade is 'medium', 2 first indicator lamps are determined to be first indicator lamps to be lightened, and the receiving side or the transmitting side is controlled to lighten 2 first indicator lamps to be lightened; when the total received signal quality grade is high, the 3 first indicator lamps are determined to be the first indicator lamps to be lightened, and the receiving side or the transmitting side is controlled to lighten the 3 first indicator lamps to be lightened.
Optionally, the first indicator to be lit is determined by the identification logic, that is, the total received signal quality level is represented by the lit first indicator of the corresponding identification. For example, assuming that the housing on the receiving side or the transmitting side is provided with 3 first indicator lights, "low", "medium", and "high" are also respectively identified on the housing for the 3 first indicator lights. In specific implementation, when the total received signal quality level is "low", it is only necessary to determine that the first indicator lamp marked as "low" is the first indicator lamp to be turned on, and control the receiving side or the transmitting side to turn on the first indicator lamp to be turned on, and the total received signal quality level is similar to other levels.
Optionally, the first indicator to be lit is determined by color logic, that is, the total received signal quality level is represented by lighting the first indicator emitting a corresponding color. For example, it is assumed that the housing on the receiving side or the transmitting side is provided with 3 first indicator lights, and the 3 first indicator lights emit lights of different colors, such as green, yellow, and red, respectively. When the total received signal quality level is 'low', determining that a first indicator lamp emitting red light is a first indicator lamp to be lightened; when the quality grade of the total received signal is 'middle', determining that a first indicator lamp emitting yellow light is a first indicator lamp to be lightened; when the total received signal quality level is high, the first indicator lamp emitting green light is determined as the first indicator lamp to be lightened.
It should be noted that, the determination of the first indicator to be turned on by the quantity logic, the identification logic and the color logic is only a feasible determination manner, but is not limited to the determination manner of the first indicator to be turned on of the present invention.
The signal quality indicating method based on the channel state information provided by the embodiment of the invention is implemented specifically, the channel state information generated by a receiving side according to a data packet transmitted by a transmitting side is acquired; obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information; calculating an average value of signal amplitudes of all receiving paths of each receiving antenna on the receiving side to obtain a received signal amplitude of each receiving antenna on the receiving side; determining a received signal quality grade corresponding to each receiving antenna of the receiving side from R preset received signal quality grades according to the received signal amplitude of each receiving antenna of the receiving side; wherein, R receiving signal quality grades are respectively corresponding to R preset receiving signal amplitude ranges one by one, and R is more than 1; and sending the received signal quality grade corresponding to each receiving antenna to a user interface of a user terminal, so that the user terminal indicates the received signal quality grade corresponding to each receiving antenna after receiving the received signal quality grade corresponding to each receiving antenna through the user interface.
In the signal quality indicating method based on the channel state information provided by the embodiment of the invention, the amplitude of the received signal of each receiving antenna at the receiving side is further obtained by obtaining the channel state information, and the received signal level of each receiving antenna is determined and indicated to a user, so that the user can know the signal quality of each receiving antenna, the placing direction and the like of the receiving antenna can be adjusted in a targeted manner, and the user can optimize the communication performance of the wireless device conveniently. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each receiving antenna to the user, and the user can directly know the signal quality of each receiving antenna through the received signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the receiving antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
Example two
The present invention provides a method for indicating signal quality based on channel state information, please refer to fig. 2, fig. 2 is a schematic flow chart of a method for indicating signal quality based on channel state information according to a second embodiment of the present invention; specifically, the method comprises the following steps:
s21, acquiring channel state information generated by the receiving side according to the data packet transmitted by the transmitting side;
s22, obtaining a signal amplitude corresponding to each transmitting path of each transmitting antenna at the transmitting side according to the channel state information;
s23, calculating the average value of the signal amplitude of all the transmitting paths of each transmitting antenna at the transmitting side, and obtaining the transmitting signal amplitude of each transmitting antenna at the transmitting side;
s24, determining the transmission signal quality grade corresponding to each transmission antenna on the transmitting side from T preset transmission signal quality grades according to the transmission signal amplitude of each transmission antenna on the transmitting side; the T quality levels of the transmitting signals correspond to T preset amplitude ranges of the transmitting signals one by one, and T is greater than 1;
s25, sending the quality grade of the transmission signal corresponding to each transmitting antenna to a user interface of the user terminal, so that the user terminal indicates the quality grade of the transmission signal corresponding to each transmitting antenna after receiving the quality grade of the transmission signal corresponding to each transmitting antenna through the user interface.
In particular, it is assumed that wireless device a sends a data packet to wireless device B, and wireless device B generates CSI information according to the data packet transmitted by wireless device a. Obtaining CSI information generated by the wireless device B, and obtaining, according to the CSI information, a signal amplitude corresponding to each transmission path of each transmission antenna of the wireless device a, for example, a signal amplitude corresponding to N transmission paths of the 1 st transmission antenna of the wireless device a, a signal amplitude corresponding to N transmission paths of the 2 nd transmission antenna of the wireless device a, … …, and a signal amplitude corresponding to N transmission paths of the M-th transmission antenna of the wireless device a. Calculating an average value of N signal amplitudes of N transmission paths of the 1 st transmission antenna of the wireless device a, calculating an average value of N signal amplitudes of N transmission paths of the 2 nd transmission antenna of the wireless device a, … … calculating an average value of N signal amplitudes of N transmission paths of the M th transmission antenna of the wireless device a, and thus obtaining a transmission signal amplitude of the 1 st transmission antenna of the wireless device a, a transmission signal amplitude of the 2 nd transmission antenna of the wireless device a, … …, and a transmission signal amplitude of the M th transmission antenna of the wireless device a in sequence.
The T emission signal quality grades are respectively in one-to-one correspondence with T preset emission signal amplitude ranges, for example, T is 3, the preset 3 emission signal quality grades are 'low', 'medium' and 'high', the corresponding emission signal amplitude range when the emission signal quality grade is 'low' is 0-0.2, the corresponding emission signal amplitude range when the emission signal quality grade is 'medium' is 0.2-0.4, and the corresponding emission signal amplitude range when the emission signal quality grade is 'high' is 0.4-0.6. Of course, the number of T, the quality level of the transmission signal, and the amplitude range of the transmission signal corresponding to each transmission signal level may be set according to specific situations, and the above data are only exemplary.
For the 1 st transmitting antenna of the wireless device A, determining a transmitting signal quality grade corresponding to the 1 st transmitting antenna of the wireless device A from T preset transmitting signal quality grades according to the transmitting signal amplitude of the 1 st transmitting antenna of the wireless device A; for example, assuming that the transmission signal amplitude of the 1 st transmitting antenna of the wireless device a is 0.1, based on the above example, the transmission signal quality level corresponding to the 1 st transmitting antenna of the wireless device a may be determined to be "low". For the 4 th transmitting antenna of the wireless device A, determining a transmitting signal quality grade corresponding to the 4 th transmitting antenna of the wireless device A from T preset transmitting signal quality grades according to the transmitting signal amplitude of the 4 th transmitting antenna of the wireless device A; for example, assuming that the transmission signal amplitude of the 4 th transmitting antenna of wireless device a is 0.49, based on the above example, the transmission signal quality level corresponding to the 4 th transmitting antenna of wireless device a may be determined to be "high". And analogizing in turn, and determining the quality grade of the transmission signal corresponding to each transmission antenna.
And sending the transmission signal quality grade corresponding to each transmitting antenna to a user interface of a user terminal, for example, the user terminal is a mobile phone or a PC terminal, the user interface is a network interface, and the user terminal presents each transmission signal quality grade after receiving the transmission signal quality grade corresponding to each transmitting antenna through the user interface, so as to indicate the transmission signal quality grade corresponding to each transmitting antenna to a user. Optionally, the quality level of the transmission signal corresponding to each transmitting antenna may be mapped into a table or an image, and the user knows the quality level of the transmission signal corresponding to each transmitting antenna through the table or the image. Optionally, corresponding software may be specially set to indicate the quality level of the transmission signal corresponding to each transmitting antenna to the user, and the quality level of the transmission signal corresponding to each transmitting antenna is sent to the network interface corresponding to the software; or after the data is sent to a network interface of the user terminal in the form of a file, the file is opened in response to an opening instruction of the user so as to indicate the transmission signal quality level corresponding to each transmitting antenna to the user.
It should be noted that, the implementation process is similar for the implementation in which the wireless device B serves as the transmitting side and the wireless device a serves as the receiving side, and is not described again here.
In the signal quality indication method based on the channel state information provided by this embodiment, by acquiring the channel state information, the transmission signal amplitude of each transmission antenna at the transmitting side is further acquired, and the transmission signal level of each transmission antenna is determined and indicated to the user, so that the user can know the signal quality of each transmission antenna, and the positioning and the like of the transmission antennas can be conveniently and pointedly adjusted, and the user can conveniently optimize the communication performance of the wireless device. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each transmitting antenna to the user, and the user can directly know the signal quality of each transmitting antenna through the transmitting signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the transmitting antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
Preferably, the channel state information includes signal state data of each of M × N data streams on K subcarriers, each of the signal state data includes a signal amplitude and a signal phase, M is the number of transmit antennas on the transmit side, and N is the number of receive antennas on the receive side; m >1, N >1, K > 1;
then, the signal amplitude corresponding to each transmission path of each transmission antenna at the transmitting side is obtained according to the channel state information;
constructing a first channel state matrix according to M x N x K channel state data in the channel state information;
performing dimensionality reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each transmitting path of each transmitting antenna on the transmitting side.
Following CSI with the first channel state matrix of M N rows and K columns1The matrix is illustrated as an example:
assuming channel state information as follows1Matrix:
Figure GDA0003515953800000201
wherein csii,jAnd the channel state data of the ith data stream on the jth subcarrier is represented, wherein i is 1,2, …, M is N, j is 1,2, …, and K is the number of subcarriers.
The above matrix CSI1Performing dimensionality reduction to obtain CSI with dimensions of M, N, K1Reducing the dimension of the matrix to obtain an M-N matrix so as to eliminate the channel correlation among K subcarriers and obtain a second channel state matrix with M rows and N columns, such as the following CSI2Matrix shows:
Figure GDA0003515953800000202
for CSI2Each channel state data csi of the matrixmnIs extracted to obtain a first channel state matrix, M is 1,2, …, M, N is 1,2, …, N.
For the second channel state matrix CSI2The signal amplitude of the channel state data is extracted to obtain the signal amplitude of each transmission path of each transmission antenna. If all the signal amplitudes are represented by a matrix, the following CSI matrix is obtained:
Figure GDA0003515953800000211
wherein, amnRepresenting CSI2Channel state data csi in matrixmnOf the signal amplitude of (1).
If the signal amplitudes of all the transmitting paths of the same transmitting antenna at the transmitting side are arranged in the same row, a in the CSImnIs the signal amplitude corresponding to the nth transmit path of the mth transmit antenna on the transmit side. Then, when m is 1, a11～a1nThe signal amplitudes corresponding to the n receiving paths of the 1 st receiving antenna on the transmitting side respectively; when m is 2, a21～a2nThe amplitudes of the signals corresponding to the n receiving paths of the 2 nd receiving antenna on the transmitting side are respectively, and so on.
Preferably, after calculating an average value of signal amplitudes of all transmission paths of each transmission antenna of the transmission side and obtaining a transmission signal amplitude of each transmission antenna of the transmission side, the method further includes:
calculating the average value of the transmitting signal amplitudes of all the transmitting antennas at the transmitting side to obtain the total transmitting signal amplitude of the transmitting side;
determining a transmission signal quality grade corresponding to the total transmission signal amplitude from the T preset transmission signal quality grades to obtain a total transmission signal quality grade;
and controlling the total transmission signal quality level to indicate to a user according to a preset indication form.
In specific implementation, assume that there are M transmitting antennas on the transmitting side, and the amplitude values of the transmitting signals obtained from the 1 st transmitting antenna to the nth transmitting antenna are T1～TNThen, T is also calculated1～TNAnd averaging to obtain the total transmitted signal amplitude TX. And determining the transmission signal quality grade corresponding to the total transmission signal amplitude TX from the T preset transmission signal quality grades to obtain the total transmission signal quality grade. For example, when TX is 0.55, the transmission signal quality level corresponding to TX 0.55 is determined to be "high", and then the total transmission signal quality level is obtained to be "high".
And after the total transmission signal quality grade is obtained, controlling the total transmission signal quality grade to indicate to a user according to a preset indication form. It should be noted that, the indication form has multiple choices, for example, the same as the transmission signal quality level of each transmission antenna, the indication is sent to the network interface of the user terminal, the user terminal indicates the total transmission signal quality level to the user, and the user terminal can indicate the total transmission signal quality level and the transmission signal quality level of each transmission antenna to the user through the forms of voice, statistical chart, table, etc.; for another example, the total transmitted signal quality level is sent to the receiving side or the transmitting side, the total transmitted signal quality level is indicated to the user through corresponding software hardware of the receiving side or the transmitting side, the receiving side or the transmitting side can indicate the total transmitted signal quality level to the user through voice, indicator lights and other forms, and only corresponding control instructions need to be sent to the receiving side or the transmitting side.
In this embodiment, not only can the user know the signal quality of each transmitting antenna, but also the user can know the signal quality of the overall transmitting signal of the transmitting side, which is not only convenient for pertinently adjusting the placing position and the like of the transmitting antenna, but also convenient for the user to adjust the overall position of the wireless device, and further convenient for the user to optimize the communication performance of the wireless device.
Preferably, the housing of the receiving side or the transmitting side is provided with Y second indicator lights for indicating the signal quality of the transmitted signal, Y > 1; then, the controlling the total transmitted signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a second indicator lamp to be lightened from the Y second indicator lamps according to the total transmitted signal quality grade;
and controlling the second indicator lamp to be lightened which is lightened on the receiving side or the transmitting side so that the total transmitted signal quality level is indicated to a user through the second indicator lamp.
In this embodiment, the total received signal quality level is indicated to the user in the form of an indicator lamp on the receiving side or the transmitting side, so that the user can know the total received signal quality level more intuitively. It should be noted that the logic for determining the second indicator to be lit according to the total transmitted signal quality level may be a number logic, an identification logic, a color logic or other feasible determination manners, but is not limited to the determination manner of the second indicator to be lit of the present invention, and in actual application, other manners may be adopted according to actual needs, so long as the scheme of the present invention is applicable. The specific implementation of determining the second indicator to be lit by the number logic, the identification logic, and the color logic is similar to the specific implementation of determining the first indicator to be lit by the number logic, the identification logic, and the color logic in the first embodiment, and therefore, details thereof are not repeated herein.
In the second embodiment, a method for indicating signal quality based on channel state information is specifically implemented, where channel state information generated by a receiving side according to a data packet transmitted by a transmitting side is acquired; obtaining a signal amplitude corresponding to each transmitting path of each transmitting antenna on the transmitting side according to the channel state information; calculating the average value of the signal amplitude of all the transmitting paths of each transmitting antenna on the transmitting side to obtain the transmitting signal amplitude of each transmitting antenna on the transmitting side; determining a transmission signal quality grade corresponding to each transmission antenna on the transmitting side from T preset transmission signal quality grades according to the transmission signal amplitude of each transmission antenna on the transmitting side; the T emission signal quality grades are respectively in one-to-one correspondence with T preset emission signal amplitude ranges, and T is greater than 1; and sending the transmission signal quality grade corresponding to each transmitting antenna to a user interface of a user terminal, so that the user terminal indicates the transmission signal quality grade corresponding to each transmitting antenna after receiving the transmission signal quality grade corresponding to each transmitting antenna through the user interface.
In the signal quality indication method based on the channel state information provided by the second embodiment, by acquiring the channel state information, the amplitude of the transmission signal of each transmitting antenna at the transmitting side is further acquired, and the level of the transmission signal of each transmitting antenna is determined and indicated to the user, so that the user can know the signal quality of each transmitting antenna, the positioning and the like of the transmitting antennas can be conveniently and specifically adjusted, and the user can conveniently optimize the communication performance of the wireless device. Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each transmitting antenna to the user, and the user can directly know the signal quality of each transmitting antenna through the transmitting signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the transmitting antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
EXAMPLE III
The present invention further provides a signal quality indication method based on channel state information, please refer to fig. 3, fig. 3 is a schematic flow chart of a signal quality indication method based on channel state information according to a third embodiment of the present invention; specifically, the method comprises the following steps:
s31, according to the method for indicating signal quality based on channel state information provided in the first embodiment, indicating a received signal quality level corresponding to each receiving antenna on the receiving side;
s32, indicating the transmission signal quality level corresponding to each transmitting antenna on the transmitting side according to the method for indicating signal quality based on channel state information provided in the second embodiment.
In the method for indicating signal quality based on channel state information provided in this embodiment, by obtaining the channel state information, the received signal amplitude of each receiving antenna at the receiving side and the transmitted signal amplitude of each transmitting antenna at the transmitting side are further obtained, and the received signal quality level of each receiving antenna at the receiving side and the transmitted signal level of each transmitting antenna at the transmitting side are determined and indicated to a user. The embodiment enables the user to know the signal quality of each receiving antenna at the receiving side and the signal quality of each transmitting antenna at the transmitting side, thereby being convenient for adjusting the placing directions and the like of the receiving antennas and the transmitting antennas in a targeted manner and being convenient for the user to optimize the communication performance of the wireless equipment.
Furthermore, the prior art directly indicates the RSSI value to the user, and the user needs to have certain professional knowledge to know whether a certain RSSI value reflects the signal quality of the wireless device, but the invention does not directly indicate the signal amplitude of each receiving antenna and the signal amplitude of each transmitting antenna to the user, and the user can directly know the signal quality of each receiving antenna and each transmitting antenna through the receiving signal quality grade and the transmitting signal quality grade, and does not need to consider that the signal amplitude reflects the signal quality, and particularly for the user who is not a professional technician, the invention is friendly to the indication of the signal quality of the receiving antenna and the transmitting antenna, and is further convenient for the user to optimize the communication performance of the wireless device.
It should be noted that, the specific principle, implementation manner, and beneficial effects of indicating the signal quality of the receiving antenna at the receiving side in the third embodiment of the present invention correspond to the specific principle, implementation manner, and beneficial effects of indicating the signal quality of the receiving antenna at the receiving side in one-to-one manner, and therefore are not described herein again; the third embodiment of the present invention is to indicate the specific principle, implementation manner, and beneficial effect of the signal quality of the transmitting antenna at the transmitting side, and the specific principle, implementation manner, and beneficial effect of the signal quality of the transmitting antenna at the transmitting side are implemented in a one-to-one correspondence, and therefore, no further description is given here.
It should be noted that, if a user needs to know the signal quality obtained by the receiving antenna and the transmitting antenna of the wireless device a and the signal quality obtained by the receiving antenna and the transmitting antenna of the wireless device B, the user can obtain the signal quality corresponding to the receiving antenna and the transmitting antenna of the wireless device a and the wireless device B only by using the wireless device a and the wireless device B to transmit a data packet and receive a data packet of the other party, and performing the third implementation according to the third implementation, so that the user can obtain the signal quality of the global antenna of the transmission link of the wireless device a and the wireless device B.
It should be noted that R preset received signal quality levels and T preset transmitted signal quality levels may be the same or different, and similarly, R received signal amplitude ranges and T transmitted signal amplitude ranges may be the same or different.
It should be noted that, when the receiving side or the transmitting side is provided with X first indicator lights and Y second indicator lights, X and Y may be equal or unequal. The logic for determining the first indicator to be lit may be the same as or different from the logic for determining the second indicator to be lit. In actual application, the combination setting can be carried out according to actual needs.
Preferably, the data packet is generated by the transmitting side in an OFDM modulation mode.
In order to facilitate acquisition of the CSI information, the data packets transmitted by the wireless device a and the wireless device B are data packets generated in the OFDM modulation mode, so that the CSI information is directly obtained from the inherent physical layer of the OFDM modulation mode on the receiving side of the data packets.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A method for indicating signal quality based on channel state information, the method comprising:
acquiring channel state information generated by a receiving side according to a data packet transmitted by a transmitting side;
obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information;
calculating an average value of signal amplitudes of all receiving paths of each receiving antenna on the receiving side to obtain a received signal amplitude of each receiving antenna on the receiving side;
according to the received signal amplitude of each receiving antenna on the receiving side, determining a received signal quality grade corresponding to each receiving antenna on the receiving side from R preset received signal quality grades; wherein, R receiving signal quality grades are respectively corresponding to R preset receiving signal amplitude ranges one by one, and R is more than 1;
and sending the received signal quality grade corresponding to each receiving antenna to a user interface of a user terminal, so that the user terminal indicates the received signal quality grade corresponding to each receiving antenna after receiving the received signal quality grade corresponding to each receiving antenna through the user interface.
2. The method according to claim 1, wherein the channel state information includes signal state data of each of M × N data streams on K subcarriers, each of the signal state data includes a signal amplitude and a signal phase, M is the number of transmit antennas at the transmit side, and N is the number of receive antennas at the receive side; m >1, N >1, K > 1;
then, obtaining a signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side according to the channel state information;
constructing a first channel state matrix according to M x N x K signal state data in the channel state information;
performing dimensionality reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each receiving path of each receiving antenna at the receiving side.
3. The method for indicating signal quality based on channel state information according to claim 1, wherein after calculating an average value of signal amplitudes of all receiving paths of each receiving antenna of the receiving side to obtain a received signal amplitude of each receiving antenna of the receiving side, the method further comprises:
calculating the average value of the received signal amplitudes of all the receiving antennas at the receiving side to obtain the total received signal amplitude at the receiving side;
determining a received signal quality grade corresponding to the total received signal amplitude from the R preset received signal quality grades to obtain a total received signal quality grade;
and controlling the total received signal quality grade to indicate to a user according to a preset indication form.
4. The signal quality indicating method based on channel state information as claimed in claim 3, wherein a housing of the receiving side or the transmitting side is provided with X first indicator lamps for indicating signal quality of a received signal, X > 1; then, the controlling the total received signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a first indicator lamp to be lightened from X first indicator lamps according to the total received signal quality grade;
and controlling the first indicator lamp to be lightened which is lightened on the receiving side or the transmitting side so as to enable the total received signal quality grade to be indicated to a user through the first indicator lamp.
5. A method for indicating signal quality based on channel state information, the method comprising:
acquiring channel state information generated by a receiving side according to a data packet transmitted by a transmitting side;
obtaining a signal amplitude corresponding to each transmitting path of each transmitting antenna at the transmitting side according to the channel state information;
calculating the average value of the signal amplitude of all the transmitting paths of each transmitting antenna on the transmitting side to obtain the transmitting signal amplitude of each transmitting antenna on the transmitting side;
determining a transmission signal quality grade corresponding to each transmission antenna on the transmitting side from T preset transmission signal quality grades according to the transmission signal amplitude of each transmission antenna on the transmitting side; the T emission signal quality grades are respectively in one-to-one correspondence with T preset emission signal amplitude ranges, and T is greater than 1;
and sending the transmission signal quality grade corresponding to each transmitting antenna to a user interface of a user terminal, so that the user terminal indicates the transmission signal quality grade corresponding to each transmitting antenna after receiving the transmission signal quality grade corresponding to each transmitting antenna through the user interface.
6. The method according to claim 5, wherein the channel state information comprises signal state data of each of M x N data streams on K subcarriers, each of the signal state data comprises a signal amplitude and a signal phase, M is the number of transmit antennas at the transmit side, and N is the number of receive antennas at the receive side; m >1, N >1, K > 1;
then, obtaining a signal amplitude corresponding to each transmission path of each transmission antenna at the transmitting side according to the channel state information;
constructing a first channel state matrix according to M x N x K signal state data in the channel state information;
performing dimensionality reduction processing on the first channel state matrix to remove correlation among signal state data of each data stream on K subcarriers, and obtaining a second channel state matrix comprising M × N channel state data;
and extracting the signal amplitude of each channel state data of the second channel state matrix to obtain the signal amplitude corresponding to each transmitting path of each transmitting antenna on the transmitting side.
7. The method for indicating signal quality based on channel state information according to claim 5, wherein after calculating an average value of signal amplitudes of all transmission paths of each transmission antenna of the transmitting side to obtain a transmission signal amplitude of each transmission antenna of the transmitting side, the method further comprises:
calculating the average value of the transmitting signal amplitudes of all the transmitting antennas at the transmitting side to obtain the total transmitting signal amplitude of the transmitting side;
determining a transmission signal quality grade corresponding to the total transmission signal amplitude from the T preset transmission signal quality grades to obtain a total transmission signal quality grade;
and controlling the total transmission signal quality level to indicate to a user according to a preset indication form.
8. The signal quality indicating method based on channel state information as claimed in claim 7, wherein a housing of the receiving side or the transmitting side is provided with Y second indicator lamps for indicating signal quality of a transmission signal, Y > 1; then, the controlling the total transmitted signal quality level to indicate to the user according to a preset indication form specifically includes:
determining a second indicator lamp to be lightened from the Y second indicator lamps according to the total emission signal quality grade;
and controlling the second indicator lamp to be lightened which is lightened on the receiving side or the transmitting side so that the total transmitted signal quality level is indicated to a user through the second indicator lamp.
9. A method for indicating signal quality based on channel state information, the method comprising:
the method for indicating signal quality according to any one of claims 1 to 4, wherein the method indicates a received signal quality level corresponding to each receiving antenna at the receiving side;
the method for indicating signal quality according to any one of claims 5 to 8, wherein the method indicates a transmission signal quality level corresponding to each transmission antenna on the transmission side.
10. The channel state information-based signal quality indication method of claim 9, wherein the data packet is generated by the transmitting side in an OFDM adjustment mode.
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